An evaluation of some electrical waveforms and voltages used for electric fishing; with special reference to their use in backpack electric fishing gear |
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| Authors: | W. R. C. Beaumoint M. J. Lle M. A. Rouen |
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| Affiliation: | Centre for Ecology and Hydrology Dorset, Winfrith Technology Centre, Winfrith Newburgh, Dorchester, Dorset DT2 8ZD, U.K.;Centre for Ecology and Hydrology Windermere, Far Sawrey, Ambleside, Cumbria LA22 0LP, U.K. |
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| Abstract: | Exponential pulse waveform in electric fishing gave a significantly poorer capture efficiency than other waveforms evaluated. Plasma cortisol levels were significantly and uniformly elevated after shocking by all waveforms. Mortality from the electric fishing was low, 0·2% overall, with few sub-lethal effects. A 0·5 ms duration square pulse waveform had significantly higher catch-per-unit-power than the other waveforms. |
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| Keywords: | lelectric fishing waveforms capture efficiency stress mortality |
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